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Mathematics 18 Online
OpenStudy (anonymous):

A locker combination consists of two non-zero digits. The digits in a combination are not repeated and range from 2 through 9. Event A = the first digit is less than 5 Event B = the second digit is less than 5 If a combination is picked at random, with each possible locker combination being equally likely, what is P(B|A) expressed in simplest form?

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